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Letter to the USDA on mad cow disease

CU has a number of questions about your November 23, 2004 announcement that a cow, which had tested “not negative” in two runs of the Bio-Rad ELISA quick test for mad cow disease, was “indeed negative for BSE.” We are concerned because New
Scientist reported last June that the false positive rate after such repeated testing is “around one in 100,000 for Bio-Rad.”